The length of the string of a simple pendulum is measured with a me...

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The length of the string of a simple pendulum is measured with a metre scale to be \( 90^{\cdot 0} \mathrm{~cm} \). The radius of the bob plus the length of the hook is calculated to be \( 2.13 \mathrm{~cm} \) using measurements with a slide callipers.
\( \mathrm{P} \) What is the effective length of the pendulum? (The

W effective length is defined as the distance between the point of suspension and the centre of the bob.)
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